CN1930842A - Conveying additional signaling information in an OFDM-based wireless local area network - Google Patents
Conveying additional signaling information in an OFDM-based wireless local area network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
- H04L1/0051—Stopping criteria
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
- H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
- H03M13/1105—Decoding
- H03M13/1111—Soft-decision decoding, e.g. by means of message passing or belief propagation algorithms
- H03M13/1114—Merged schedule message passing algorithm with storage of sums of check-to-bit node messages or sums of bit-to-check node messages, e.g. in order to increase the memory efficiency
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
- H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
- H03M13/1105—Decoding
- H03M13/1111—Soft-decision decoding, e.g. by means of message passing or belief propagation algorithms
- H03M13/1117—Soft-decision decoding, e.g. by means of message passing or belief propagation algorithms using approximations for check node processing, e.g. an outgoing message is depending on the signs and the minimum over the magnitudes of all incoming messages according to the min-sum rule
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
- H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
- H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
- H03M13/1105—Decoding
- H03M13/1128—Judging correct decoding and iterative stopping criteria other than syndrome check and upper limit for decoding iterations
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/3707—Adaptive decoding and hybrid decoding, e.g. decoding methods or techniques providing more than one decoding algorithm for one code
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
A high-throughput communication station conveys additional signaling information by transmitting a high-throughput packet with a time offset between some portions of the packet transmitted on a first subchannel and some portions of the packet transmitted on a second subchannel. The time offset may convey additional signaling information to a receiving station.
Description
The cross reference of related application: the application requires on January 12nd, 2004 to submit, sequence number is No.60/536,071 U.S. Provisional Patent Application and on March 23rd, 2004 submit, sequence number is No.10/806, the priority of 893 U.S. Patent application is included in described application herein by reference.
Technical field
Embodiment of the present invention relate to radio communication, and in some embodiments, relate to multi-carrier communication.
Background
In wireless lan (wlan), in order to transmit high-throughput packet (packet) on broad-band channel, high-throughput communication station (station) may need to transmit (convey) extra signaling information.This extra signaling information should be compatible mutually with conventional (for example non-high-throughput) communication station, thereby signaling and medium reservation function can be carried out in these general communication stations.
Brief Description Of Drawings
Appended claims points to some in the various embodiments of the present invention.Yet when considering in conjunction with the accompanying drawings, detailed description has presented the more complete understanding of embodiment of the present invention, and in whole accompanying drawing, identical label refers to similar (item), and:
Fig. 1 is the block diagram according to the high-throughput communication station of embodiments more of the present invention;
Fig. 2 embodiments more according to the present invention illustrate high-throughput packet;
Fig. 3 is the flow chart according to the high-throughput packet transmission procedure of embodiments more of the present invention; And
Fig. 4 is the flow chart according to the high-throughput packet receiving course of embodiments more of the present invention.
Describe in detail
The following description and drawings illustrate specific embodiments of the present invention fully, to enable those skilled in the art to put into practice them.Other embodiments can comprise structure, logic, electric, process and other change.Embodiment only represents possible variation.Unless explicitly call for, otherwise independent assembly and function are optionally, and the order of operation can change.The part of some embodiments and feature can be included in or replace the part and the feature of other embodiments.The scope of embodiment of the present invention comprises the gamut (ambit) of claims, and all obtainable equivalents of claims.In this article, these embodiments of the present invention can be represented with term " invention " individually or always, this only is for convenience, and if in fact disclose and surpass one invention, not that the scope that will automatically limit this application is any single invention or inventive concept.
Fig. 1 is the block diagram according to the high-throughput communication station of embodiments more of the present invention.High-throughput communication station 100 can be a Wireless Telecom Equipment, and can use one or more antennas 106 to launch and/or receive wireless communication signals with transmitter circuitry 102 and/or receiver circuit 104.
In some embodiments, communication station 100 can be called as receiving station, and in some embodiments, communication station 100 can be called as the cell site.In some embodiments, as described in more detail below, communication station 100 can with one or more other communication station OFDMs (Orthogonal Frequency Division Multiplexed for example, OFDM) signal of communication.
According to embodiments more of the present invention, by launching high-throughput packet in the mode that has time migration between the some parts of the grouping of launching on the some parts (portion) of the grouping of launching on first subchannel of high-throughput channel and second subchannel at high-throughput channel, high-throughput communication station 100 can transmit extra signaling information.The existence of time migration can be sent to receiving station with extra signaling information.In some embodiments, treatment circuit 108 can instruct transmitter circuitry 102 emissions have the high-throughput packet of described time migration, so that extra signaling information is sent to another communication station.First and second parts of described grouping can with the general communication station compatibility on that is operated in the described subchannel, it is that described subchannel is carried out signaling and medium reservation function that described subchannel allows these general communication stations.
According to embodiments more of the present invention, by to receive high-throughput packet at the some parts of the grouping that receives on first subchannel and the mode that has time migration between the some parts of the grouping that receives on second subchannel, extra signaling information can be sent to high-throughput communication station 100.In some embodiments, receiver circuit 104 can receive high-throughput packet, and treatment circuit 108 can be discerned this second time migration and determine this extra signaling information.
The embodiment of extra signaling information can comprise the next code of the data division of high-throughput packet, for example comprises modulation type, spatial channel information or other signaling informations.In some embodiments, high-throughput communication station 100 can transmit can with the packet format of conventional (being non-high-throughput) communication station compatibility, and can transmit may with the incompatible packet format in general communication station.In these embodiments, it is the form that is in general communication station compatibility with the partial interpretation of described grouping that the high-throughput communication station that receives the part of grouping can be used extra signaling information, perhaps is interpreted as and the incompatible form in general communication station.
In some embodiments, communication station 100 can be on the ofdm communication channel and one or more communication station.In some embodiments, the ofdm communication channel can comprise standard-throughput channel or high-throughput channel.In these embodiments, standard-throughput channel can comprise a subchannel, and high-throughput channel can comprise one or more subchannel and the combination of one or more space channels being associated with every subchannel.Space channel can be the non-orthogonal channel (promptly not separated on frequency) that is associated with particular sub-channel, and wherein, orthogonality can obtain by wave beam formation and/or diversity.
Subchannel can be frequency division multiplexing (promptly separating with other subchannels on frequency), and can be in predetermined frequency spectrum.Subchannel can comprise a plurality of orthogonal sub-carriers (subcarrier).In some embodiments, the orthogonal sub-carriers of subchannel can be an interval OFDM subcarrier closely.In some embodiments, in order to obtain at interval orthogonality closely between the subcarrier, the subcarrier of particular sub-channel can be zero (null) at the place of centre frequency basically of other subcarriers of described subchannel.
In some embodiments, high-throughput communication channel can comprise the broad-band channel that has nearly the subchannel that four frequencies separate, comprise having the nearly multiple-input and multiple-output (multiple-input-multiple-output of the wall scroll subchannel of four space channels, MIMO) channel perhaps comprises subchannel that two or more frequencies separate, wherein every subchannel has the wideband MIMO channel of two or more space channels.In these embodiments, broad-band channel can have the wideband channel bandwidth up to 80MHz, and can comprise nearly four subchannel, although scope of the present invention is unrestricted in this regard.Subchannel can have the subchannel bandwidth of about 20MHz, although scope of the present invention is unrestricted in this regard.In some embodiments, high-throughput channel can have the bandwidth of about 40MHz, and can be made of two subchannel.
In some embodiments, communication station 100 can comprise the antenna 106 above, to communicate by letter at subchannel and/or above surpassing on one the space channel in one the subchannel.In these embodiments, the ofdm communication channel can be a high-throughput communication channel.
In some embodiments, the frequency spectrum that is used for the ofdm communication channel can comprise or at the 5GHz frequency spectrum or at the subchannel of 2.4GHz frequency spectrum.In these embodiments, the 5GHz frequency spectrum can comprise approximately the frequency band from 4.9 to 5.9GHz, and the 2.4GHz frequency spectrum can comprise that scope is approximately from 2.4 to 2.5GHz frequency band, although scope of the present invention is unrestricted in this regard, because other frequency spectrums can be suitable equally.
In some embodiments, communication station 100 can be PDA(Personal Digital Assistant), have wireless networking communication capacity on knee or portable computer, network handwriting pad (web tablet), radio telephone, wireless head-band earphone and transmitter (headset), beep-pager, instant messaging device, digital camera, access point or can wireless receiving and/or other equipment of emission information.In some embodiments, communication station 100 can launch and/or received RF (RF) communication according to concrete communication standard (Institute of Electrical and Electronics Engineers (IEEE) standard that for example comprises IEEE 802.11 (a), 802.11 (b), 802.11 (g/h) and/or 802.11 (n) standard of being used for WLAN (wireless local area network)).In other embodiments, communication station 100 can be according to comprising that digital video broadcast terrestrial (Digital Video Broadcasting Terrestrial, DVB-T) launch and/or received communication by the other technologies of broadcast standard and high performance radio local area network (LAN) (HiperLAN) standard.
Although communication station 100 is shown as the functional part with several separation, but one or more in the described functional part can be combined, and can (for example comprise that the digital signal processor (Digital SignalProcessors, processing unit DSP)) and/or the combination of other hardware componenies realize by the parts of software arrangements.For example, the circuit that illustrates can comprise processing unit, described processing unit can comprise one or more microprocessor, DSP, application-specific integrated circuit (ASIC) (Application Specific Integrated Circuits, and be used to carry out the various hardware of function described herein at least and the combination of logical circuit ASIC).
Fig. 2 illustrates high-throughput packet according to embodiments more of the present invention.High-throughput packet 200 is the embodiment that are suitable for by the high-throughput packet of high-throughput communication station (for example high-throughput communication station 100 (Fig. 1)) emission and/or reception.
High-throughput packet 200 can be included in the part of launching on the one or more subchannel 202 and 212 of high-throughput communication channel.Although two subchannel only are shown, scope of the present invention is unrestricted in this regard.High-throughput packet 200 can be included in training field 204,206 and the signaling field 208 on first subchannel 202, and training field on second subchannel 212 214,216 and signaling field 218.High-throughput packet 200 can also be included in the high-throughput data field 220 that surpasses on the subchannel.High-throughput data field 220 can be included in part 222 and the part 224 on second subchannel 212 on first subchannel 202.In some embodiments, high-throughput data field 220 can comprise the part 230 on the frequency spectrum that is between subchannel 202 and 212 (for example all or some untapped subcarrier).Character boundary 226 can be used to determine the beginning and/or the end of the part of high-throughput packet 200.
According to embodiments more of the present invention, can be to launch high-throughput packet 200 at the some parts of the grouping of emission on first subchannel 202 and the mode that between the some parts of described grouping of emission on second subchannel 212, has a time migration 210.Time migration 210 can be sent to extra signaling information the received communication station.
In some embodiments, protection 228 may reside between some fields of grouping 200 at interval.For make-up time skew 210, the protection of prolongation 232 can be included on the one or more subchannel at interval, thereby the part of high-throughput data field 220 222,224 and 230 can be synchronous substantially in time.
Although time migration 210 be illustrated as be the part 214,216 of emission on the subchannel 212 and 218 with delay between the counterpart of launching on the subchannel 202, this is not essential.In some embodiments, can provide time migration 210 in other parts of grouping 200.For example; part 214 and 204 can be by synchronized transmissions; and can provide time migration 210 (before or after being included in one or more protection interval 228) before another part on the subchannel 212; rather than come decay part 214,216 and 218 by time migration 210, although scope of the present invention is unrestricted in this regard.In some other embodiments, can provide time migration 210 in one in part 214,216 and 218, although scope of the present invention is unrestricted in this regard.
The first 204,206 of high-throughput packet 200 and 208 can be launched on first subchannel 202 of high-throughput channel, and the second portion 214,216 of high-throughput packet 200 and 218 can be launched on second subchannel 212.In these embodiments, can be with the some parts on the mode transmit subchannel 212 that has time migration 210 with respect to emission at counterpart on the subchannel 202.Can be not only first channel 202 but also on second subchannel 212 emission third part 220 and do not have time migration 210 betwixt.In these embodiments, by the detection of time migration 210, time migration 210 can be sent to high-throughput receiving station with at least one position of signaling information.In some embodiments, described at least one position of signaling information can be the signaling information except that the signaling information that is sent to the general communication station.In some embodiments, time migration 210 can be measured by the received communication station, and compares with one or more threshold value of time migration, to determine just by the value of signaling to this received communication station.
In some embodiments, part 204,206 and 208 can be basic identical with corresponding part 214,216 and 218 in terms of content, although scope of the present invention is unrestricted in this regard.In some embodiments, part 204 and 206 can comprise the training field, and part 208 can comprise the signaling field, and part 214 and 216 can comprise the training field, and part 218 can comprise the signaling field.In some embodiments, the training field can comprise one or more training sequence of the training symbol with the value of pre-determining.In some embodiments, third part 220 can comprise high-throughput data field, to transmit high-throughput data.
Training sequence can allow receiving station carry out the control of Frequency offset estimation, automatic gain (Automatic Gain Control, AGC) and/or frame detect.In some embodiments, when the correlation between the training symbol surpasses predetermined threshold value, can detect the character boundary 226 of frame part.For example, these character boundaries can be used to determine time migration at the receiving station place.
200 are shown to have respectively in part 204 and 206 and the weak point and the long training sequence of emission in part 214 and 216 respectively although divide into groups, and this is not essential.In some embodiments, grouping 200 can be included in the individualized training sequence of launching in the individualized training field of every subchannel.
In some embodiments, by launching high-throughput packet 200 with the time migration 210 with the duration that surpasses first value of pre-determining, the single position (single bit) of signaling information can be sent to receiving station.For example, the scope of duration can be from 150 to 250ns, although scope of the present invention is unrestricted in this regard.In these embodiments, 228 scope can be from about 7 to 9 microseconds, although scope of the present invention is unrestricted in this regard at interval in protection.In some embodiments, receiving station can determine the duration of time migration 210.When the duration surpassed first value of pre-determining, the single position of signaling information can be received.
In some embodiments, by to have the duration between first value of pre-determining and second value of pre-determining, perhaps have greater than the time migration 210 of duration of second value of pre-determining and launch high-throughput packet 200, signaling information can be sent to receiving station.In these embodiments, for example, the scope of first value of pre-determining can be from 150 to 250ns, and the scope of second value of pre-determining can be from 350 to 450ns, although scope of the present invention is unrestricted in this regard.
In some embodiments, by launching high-throughput packet 200 with the time migration 210 with the duration between various threshold values, two positions (two-bits) of signaling information can be sent to receiving station.For example, in order to transmit two positions, the duration can be between first and second values of pre-determining, and the duration can be between the second and the 3rd value of pre-determining, and perhaps the duration can be between third and fourth value of pre-determining.
In some embodiments, can between each field of high-throughput packet 200, provide the time migration of the duration with variation, to transmit extra information.For example, the time migration between the correspondence of the different subchannels training field 204 and 214 can with the corresponding training field 206 of different subchannels and 216 or corresponding signaling field 208 and 218 between time migration different.
In some embodiments, high-throughput packet 200 can comprise the training field 204,214,206,216 that comprises one or more training sequence, comprise the signaling field 208 and 218 of signaling information, and the high-throughput data field 220 that comprises high-throughput data.In these embodiments, can be on subchannel 202 and 212 the essentially identical version of transmitting training sequence and signaling information.In some embodiments, signaling information can comprise form, speed and the length information that is used for high-throughput data field 220.In some embodiments, high-throughput data field 220 can have the different data division 222 and 224 of emission on subchannel 202 and 212 respectively.
In some embodiments, training field 204 and 206 and signaling field 208 can be on subchannel 202 receive by non-high-throughput communication station (for example tradition station (legacy station)).The training field 214 and 216 and signaling field 218 also can on subchannel 212, independently receive by one or more non-high-throughput communication station.In these embodiments, training field and signaling field can with non-high-throughput communication station compatibility.In these embodiments, non-high-throughput communication station can enter accepting state (to suppress emission) in response to the length information in the signaling field, and can be suppressed on the subchannel that is associated in this time and communicate by letter.Thereby non-high-throughput communication station can suppress emission during high-throughput data field 220.
In some embodiments, signaling field 208 and 218 can be that the information of high-throughput packet is sent to high-throughput receiving station with grouping 200.In these embodiments, signaling field 208 and 218 one can be not suitable for the counterpart of high-throughput data field being sent to non-high-throughput receiving station by the information that non-high-throughput receiving station receives, although scope of the present invention is unrestricted in this regard.
In some embodiments, the part 230 of high-throughput data field 220 can be launched at least some untapped subcarriers that are between first and second subchannels 202 and 212 of high-throughput channel.Part 230 can with high- throughput data field 222 and 224 basic synchronization be launched.
Fig. 3 is the flow chart according to the high-throughput packet transmission procedure of embodiments more of the present invention.High-throughput transmission procedure 300 can be carried out by high-throughput communication station (for example high-throughput communication station 100 (Fig. 1)), although other communication stations also can be fit to.The high-throughput communication station of implementation 300 can be known as the cell site.
Although each operation of process 300 is illustrated as and is described to operation separately, one or more multinomial can the execution concomitantly in described each operation, and do not require by the order executable operations that illustrates.
Fig. 4 is the flow chart according to the high-throughput packet receiving course of embodiments more of the present invention.High-throughput receiving course 400 can be carried out by high-throughput communication station (for example high-throughput communication station 100 (Fig. 1)), although other communication stations also can be suitable.The high-throughput communication station of implementation 400 can be known as receiving station.
Although each operation of process 400 is illustrated as and is described to operation separately, one or more multinomial can the execution concomitantly in described each operation, and do not require by the order executable operations that illustrates.
Embodiment of the present invention can realize with one of hardware, firmware and software or their combination.Embodiment of the present invention also may be implemented as the instruction that is stored on the machine readable media, and these instructions can be read and carry out by at least one processor, to finish operation as described herein.Machine readable media can comprise any medium that is used for storage or sends the information with machine (for example computer) readable form.For example, machine readable media can comprise read-only memory (ROM), random access storage device (RAM), magnetic disk storage medium, optical disk medium, flash memory device, electricity, light, sound or other forms of transmitting signal (for example carrier wave, infrared signal, digital signal etc.), and other media.
Summary provides in accordance with 37C.F.R § 1.72 (b), and 37C.F.R § 1.72 (b) requirement can allow the reader understand fully the summary of disclosed character of present technique and purport very soon.The submission of summary is endowed such understanding, promptly can not use it to explain or limit the scope or the implication of these claims.
In above-mentioned detailed description, various features are combined in the single embodiment together, to simplify the disclosure.This open method should be interpreted as reflecting such intention, that is, the embodiment of theme required for protection need be than the more feature of clearly being stated in each claim of feature.On the contrary, as appending claims reflected, invention was in the state that lacks than whole features of disclosed single embodiment.Therefore, appending claims clearly is merged in the detailed description hereby, and wherein every claim is alone as the independent preferred embodiment of the present invention.
Claims (38)
1. one kind is used for carrying out method for transmitting on high-throughput communication channel, comprising:
To launch high-throughput packet at the some parts of the grouping of launching on first subchannel and the mode that has time migration between the some parts of the grouping of launching on second subchannel, described time migration transmits extra signaling information.
2. the method for claim 1, wherein firing operation comprises:
The first of the described high-throughput packet of emission on described first subchannel of described high-throughput channel;
The second portion of the described high-throughput packet of emission on described second subchannel of described high-throughput channel, wherein, the mode that has described time migration with the described emission with respect to described first is launched described second portion; And
Not only do not have described time migration betwixt in emission third part on described first subchannel but also on described second subchannel, by detecting described time migration, described time migration is sent to high-throughput receiving station with at least one position of extra signaling information.
3. method as claimed in claim 2, wherein, the counterpart of the described first of described high-throughput packet and the described second portion of described high-throughput packet is basic identical,
Wherein, described first comprises the first training field and the first signaling field, and
Wherein, described second portion comprises the second training field and the second signaling field.
4. method as claimed in claim 3, wherein, each of the described first training field and the second training field comprises the training sequence with the trained values of pre-determining, and
Wherein, described third part comprises high-throughput data field, to transmit high-throughput data.
5. the method for claim 1 also comprises by the mode with described time migration with the duration that surpasses first value of pre-determining and launches described high-throughput packet, and the single position of signaling information is sent to receiving station.
6. the method for claim 1, also comprise by having in first and second values of pre-determining, to launch described high-throughput packet, two positions of signaling information are sent to receiving station in the mode of the described time migration of the described second and the 3rd value of pre-determining or duration of between described third and fourth value of pre-determining, changing.
7. method as claimed in claim 2, wherein, described high-throughput channel comprises the subchannel that two frequencies are separated, described time migration between the corresponding field of described two subchannel,
Wherein, described subchannel is the OFDM channel.
8. method as claimed in claim 7, wherein, every subchannel comprises a plurality of OFDM subcarriers, and
Wherein, each OFDM subcarrier is zero at the basic centre frequency place of other subcarriers, to reach basic quadrature between the described subcarrier of the subchannel that is associated.
9. the method for claim 1, wherein described high-throughput packet comprises the training field that comprises training sequence, the signaling field that comprises signaling information, and high-throughput data field,
Wherein, described training sequence and described signaling information are comprising being launched above on one the subchannel of described high-throughput channel,
Wherein, described signaling information comprises form, speed and the length information that is used for described high-throughput data field,
Wherein, described high-throughput data field has the described different data division of launching on one the subchannel that surpasses that comprises described high-throughput channel described.
10. method as claimed in claim 9, wherein, in response to determining described length information from described signaling field, non-high-throughput communication station enters accepting state, and described non-high-throughput communication station suppresses emission during described high-throughput data field.
11. the method for claim 1 also is included in the high-throughput data field of the described high-throughput packet of emission on described first and second subchannels, and does not have described time migration betwixt.
12. method as claimed in claim 11 also is included in the extra data division of emission on the subcarrier between described first and second subchannels of being in of described high-throughput channel,
Wherein, with the described extra data division of described high-throughput data field basic synchronization ground emission.
13. the method for claim 1, wherein, between the part of the described high-throughput packet of launching on described first subchannel and character boundary, provide described time migration at the counterpart of the described high-throughput packet of launching on described second subchannel.
14. the method for claim 1, wherein, launch first high-throughput packet by first communication station in the mode that has very first time skew at the some parts on described first subchannel with between the some parts of the described grouping on described second subchannel, described firing operation is performed
Wherein, described time migration is sent to the second communication station with the first extra signaling information, and
Wherein, described method also comprises, receiving second high-throughput packet from described second communication station at some parts on described first subchannel and the mode that between the some parts of described second grouping on described second subchannel, has second time migration, and
Wherein, described second time migration is sent to described first communication station with the second extra signaling information.
15. a method that is used to receive comprises:
To receive high-throughput packet at the some parts of the described grouping on first subchannel and the mode that has time migration between the some parts of the described grouping on second subchannel, described time migration transmits extra signaling information.
16. method as claimed in claim 15 wherein, receives operation and comprises:
On described first subchannel of high-throughput channel, receive the first of described high-throughput packet;
Receive the second portion of described high-throughput packet on described second subchannel of described high-throughput channel, wherein, the mode that has described time migration with the described reception with respect to described first receives described second portion; And
Not only on described first subchannel but also on described second subchannel, receive the third part of described high-throughput packet, and do not have described time migration betwixt, by detecting described time migration, described time migration is sent to high-throughput receiving station with at least one position of extra signaling information.
17. method as claimed in claim 16, wherein, the counterpart of the described first of described high-throughput packet and the described second portion of described high-throughput packet is basic identical,
Wherein, described first comprises the first training field and the first signaling field, and
Wherein, described second portion comprises the second training field and the second signaling field.
18. method as claimed in claim 15, comprise that also the duration of determining described time migration is to receive two positions of signaling information, wherein, described time migration had in the duration between first and second values of pre-determining, duration between the described second and the 3rd value of pre-determining, or the duration between described third and fourth value of pre-determining.
19. method as claimed in claim 15, wherein, described high-throughput packet comprises the training field that comprises training sequence, the signaling field that comprises signaling information, and high-throughput data field,
Wherein, described training sequence and described signaling information were received in described the surpassing on one the subchannel that comprises described high-throughput channel,
Wherein, described signaling information comprises form, speed and the length information that is used for described high-throughput data field,
Wherein, described high-throughput data field has the described different data division that receives on one the subchannel that surpasses that is comprising described high-throughput channel.
20. method as claimed in claim 15 also comprises:
On described first and second subchannels, receive the high-throughput data field of described high-throughput packet, and do not have described time migration betwixt; And
On the subcarrier between described first and second subchannels of described high-throughput channel, receive extra data division, wherein, receive described data division with described high-throughput data field basic synchronization ground.
21. a communication station comprises:
Transmitter, described transmitter is to launch high-throughput packet at the some parts of the grouping of launching on first subchannel and the mode that has time migration between the some parts of the grouping of launching on second subchannel; And
Treatment circuit, the described transmitter of described treatment circuit order is launched described high-throughput packet in the mode that has described time migration between described some parts, and wherein, described time migration is sent to another communication station with extra signaling information.
22. communication station as claimed in claim 21, wherein, described communication station is first communication station, and another communication station is the second communication station, and described high-throughput packet is first high-throughput packet, and described time migration is very first time skew,
Wherein, described first communication station also comprises receiver, described receiver is to receive second high-throughput packet at the some parts of described second grouping on described first subchannel and the mode that has second time migration between the some parts of described second grouping on described second subchannel from described second communication station, described second time migration is sent to described first communication station with extra signaling information, and
Wherein, described treatment circuit is discerned described second time migration.
23. communication station as claimed in claim 21, wherein, described transmitter is launched the first of described high-throughput packet on described first subchannel of high-throughput channel,
Wherein, described transmitter is launched the second portion of described high-throughput packet on described second subchannel of described high-throughput channel, and wherein, the mode that has described time migration with the emission with respect to described first is launched described second portion,
Wherein, described transmitter had not only been launched third part on described first subchannel but also on described second subchannel, and did not have described time migration betwixt, and
Described treatment circuit is sent to high-throughput receiving station by described time migration with at least one position of extra signaling information.
24. communication station as claimed in claim 23, wherein, the counterpart of the described first of described high-throughput packet and the described second portion of described high-throughput packet is basic identical,
Wherein, described first comprises the first training field and the first signaling field,
Wherein, described second portion comprises the second training field and the second signaling field, and
Wherein, described third part comprises high-throughput data field, to transmit high-throughput data.
25. communication station as claimed in claim 21, wherein, described treatment circuit is by ordering described transmitter to have between first and second values of pre-determining, between the described second and the 3rd value of pre-determining, or the mode of the time migration of the duration that changes between described third and fourth value of pre-determining launches described high-throughput packet, and two positions of signaling information are sent to another station.
26. method as claimed in claim 24, wherein, described high-throughput channel comprises the subchannel that two frequencies are separated, described time migration between the corresponding field of described subchannel,
Wherein, described subchannel is the OFDM channel,
Wherein, every subchannel comprises a plurality of OFDM subcarriers, and
Wherein, each OFDM subcarrier is zero at the basic centre frequency place of other subcarriers, to reach basic quadrature between the described subcarrier of the subchannel that is associated.
27. a communication station comprises:
Receiver, described receiver receives high-throughput packet in the mode that has time migration between the some parts of the some parts of the described grouping that receives on first subchannel and the described grouping on second subchannel receives; And
Treatment circuit, described treatment circuit determine that described time migration is sent to described communication station with extra signaling information in part on described first subchannel and the described time migration between the part on described second subchannel.
28. communication station as claimed in claim 27, wherein, described communication station is first communication station that receives described high-throughput packet from the second communication station, and wherein said high-throughput packet is first high-throughput packet, and described time migration is very first time skew
Wherein, described first communication station also comprises transmitter, described transmitter is to launch second high-throughput packet at the some parts of described second grouping on described first subchannel and the mode that has second time migration between the some parts of described second grouping on described second subchannel, described second time migration is sent to described second communication station with extra signaling information, and
Wherein, described treatment circuit is selected described second time migration.
29. communication station as claimed in claim 27, wherein, described receiver receives the first of described high-throughput packet on described first subchannel of high-throughput channel,
Wherein, described receiver receives the second portion of described high-throughput packet on described second subchannel of described high-throughput channel, and wherein, the mode that has described time migration with the reception with respect to described first receives described second portion,
Wherein, described receiver is not only on described first subchannel but also receive the third part of described high-throughput packet on described second subchannel, and do not have described time migration betwixt, and
Described treatment circuit is determined at least one position of extra signaling information by described time migration.
30. communication station as claimed in claim 29, wherein, the counterpart of the described first of described high-throughput packet and the described second portion of described high-throughput packet is basic identical,
Wherein, described first comprises the first training field and the first signaling field,
Wherein, described second portion comprises the second training field and the second signaling field, and
Wherein, described third part comprises high-throughput data field, to transmit high-throughput data.
31. communication station as claimed in claim 27, wherein, described treatment circuit is by determining whether described time migration has in the duration between first and second values of pre-determining, has the described duration between the described second and the 3rd value of pre-determining, perhaps have the described duration between described third and fourth value of pre-determining, determine two positions by the signaling information of other stations transmission.
32. communication station as claimed in claim 30, wherein, described high-throughput channel comprises the subchannel that two frequencies are separated, described time migration between the corresponding field of described subchannel,
Wherein, described subchannel is the OFDM channel,
Wherein, every subchannel comprises a plurality of OFDM subcarriers, and
Wherein, each OFDM subcarrier is zero at the basic centre frequency place of other subcarriers, to reach basic quadrature between the described subcarrier of the subchannel that is associated.
33. a system comprises:
The antenna of basic omnidirectional;
Transmitter, described transmitter use described antenna emission high-throughput packet, and described grouping has in the some parts of the described grouping of launching on first subchannel and the time migration between the some parts of the described grouping of launching on second subchannel; And
Treatment circuit, the described transmitter of described treatment circuit order is launched described high-throughput packet in the mode that has described time migration between described part, and wherein, described time migration is sent to another communication station with extra signaling information.
34. system as claimed in claim 33, wherein, described high-throughput packet is first high-throughput packet, and described time migration is very first time skew,
Wherein, described system also comprises:
Receiver, described receiver receives second high-throughput packet in the mode that has second time migration between some parts on described first subchannel and the some parts in second on described second subchannel grouping from another communication station, described second time migration transmits extra signaling information, and
Wherein, described treatment circuit is discerned described second time migration.
35. system as claimed in claim 33, wherein, described transmitter is launched the first of described high-throughput packet on described first subchannel of high-throughput channel,
Wherein, described transmitter is launched the second portion of described high-throughput packet on described second subchannel of described high-throughput channel, and wherein, the mode that has described time migration with the emission with respect to described first is launched described second portion,
Wherein, described transmitter is not only in the third part of the described high-throughput packet of emission on described first subchannel but also on described second subchannel, and do not have described time migration betwixt, and
Described treatment circuit is sent to high-throughput receiving station by described time migration with at least one position of extra signaling information.
36. the machine readable media that instruction is provided when described instruction is carried out by one or more processor, causes described processor executable operations, described operation comprises;
To launch high-throughput packet at the some parts of the grouping of launching on first subchannel and the mode that has time migration between the some parts of the grouping of launching on second subchannel, described time migration transmits extra signaling information.
37. machine readable media as claimed in claim 36 wherein, when described instruction is further carried out by in the described processor one or more, causes described processor to carry out extra operation,
Wherein, launch first high-throughput packet by first communication station in the mode that has very first time skew at the some parts on described first subchannel with between the some parts of the described grouping on described second subchannel, described firing operation is performed, described very first time skew is sent to the second communication station with the first extra signaling information, and
Wherein, described operation also comprises:
Receive second high-throughput packet at some parts on described first subchannel and the mode that has second time migration between the some parts of described second grouping on described second subchannel from described second communication station, described second time migration is sent to described first communication station with the second extra signaling information.
38. machine readable media as claimed in claim 36 wherein, when described instruction is further carried out by in the described processor one or more, causes described processor executable operations, described operation also comprises:
The first of the described high-throughput packet of emission on described first subchannel of high-throughput channel,
The second portion of the described high-throughput packet of emission on described second subchannel of described high-throughput channel, wherein, the mode that has described time migration with respect to the emission of described first is launched described second portion,
Not only in the third part of the described high-throughput packet of emission on described first subchannel but also on described second subchannel, and do not have described time migration betwixt, by the detection to described time migration, described time migration is sent to high-throughput receiving station with at least one position of extra signaling information.
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2004
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- 2004-03-31 US US10/815,311 patent/US7263651B2/en active Active
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| US20050154958A1 (en) | 2005-07-14 |
| TWI303521B (en) | 2008-11-21 |
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| CN1922841A (en) | 2007-02-28 |
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| US7263651B2 (en) | 2007-08-28 |
| MY141800A (en) | 2010-06-30 |
| ES2366519T3 (en) | 2011-10-21 |
| CN1930843A (en) | 2007-03-14 |
| TW200534600A (en) | 2005-10-16 |
| US20050154957A1 (en) | 2005-07-14 |
| CN1930842B (en) | 2011-07-06 |
| US7395495B2 (en) | 2008-07-01 |
| CN1930825A (en) | 2007-03-14 |
| CN1922841B (en) | 2010-11-03 |
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